He thinks I'm going to leave him

And I'm at the point where it's crossed my mind multiple times. I love him but I can't keep living like this. I'm waiting for him to show me SOMETHING that I can hold on to. A sliver of hope. He won't fight for me. He just lets me walk away. He gives up without even trying. I show him every day that I love and respect him. But he does nothing. Our relationship has been 90% text messaging even though we practically live together. I stopped spending the night there. I've given him space to spend time with his friends. I started living my own life again.  I feel unimportant. We've talked it into the ground. It just isn't working. I've tried everything. I don't know what to do anymore.  Just needed to vent.